Title: The Dark Flow in the light of Planck latest results

Speaker: Fernando Atrio Barandela

Time and place: 12:00--13:00,May.28 (Tuesday), Lecture Hall /CAA/NO.955,JianChuan Road,MinHang

Abstract:

We review the observational evidence of the Dark Flow, coherent bulk flow of hundreds of galaxy clusters extending to the distance of at least 1Gpc. If the observed large-scale deviation from the Hubble flow indeed extends across the observable Universe, it would indicate a tilt produced by the quantum state of the Universe prior to the era of inflation. The null result (no dark flow) will signify a relative isolation of our Universe, and will likely lead to the questioning of various quantum-cosmology scenarios. We will discuss the latest results obtained using Planck data and we will compare them with the ones obtained previously from the WMAP satellite.